具有北斗信道约束和时延的参数不确定系统控制器设计  

Controller Design for the System of Parameter Uncertainty with Beidou Channel Constraints and Time-delay

作　　者：伍晓峰[1,2] 桂卫华[1] 刘国平[3] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083 [2]广西交通科学研究院智能交通所,南宁530007 [3]格拉摩根大学工程学院

出　　处：《小型微型计算机系统》2014年第5期1090-1094,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金重点项目(61134006)资助;国家科技支撑计划项目(2012BAK09B04)资助;教育部博士点基金项目(201101621 30011)资助

摘　　要：介绍了我国北斗系统的基本功能和框架.针对一类多输入多输出系统,当控制信号经过北斗网络传输时,会出现网络时延及信道约束的情况.为尽量避免网络拥塞,减少向通讯网络中发送数据包的数量,引入控制通信序列描述控制器访问北斗信道的次序,建立了参数不确定的控制系统模型,给出了保证系统能控的控制通信矩阵的选择方法.基于不确定项的表达式、线形矩阵不等式的相关原理和李雅普诺夫系统稳定性分析方法,给出了确保系统稳定的控制器设计方法.最后通过数值仿真算例,对比并分析具有时延和信道约束时对控制系统动态性能指标的影响,验证了该方法的有效性和可行性.This paper introduces the basic functions and structure of China＇s Beidou system. For a class of multiple inputs and multiple outputs system, when the control signals are transmitted via Beidou network, the phenomena of network time-delay and channel con- straints will occur. In order to avoid network congestion, reduce the number of packets sent to the communication network and de- scribe the order of controllers accessing Beidou channels, we introduce control communication sequence and establish parameter uncer- tainty model for the control system. To ensure the controllability of the system, we also give the method for choosing control commu- nication matrix. Based on uncertain expressions, related principle of linear matrix inequalities and the method of Lyapunov system sta- bility analysis, the design method for controller is given to ensure system stability. Finally, the numerical examples compare and ana- lyze the impact of the delay and channel constraints on the control system＇s dynamic performance and demonstrate the effectiveness and feasibility of the method.

关 键 词：北斗系统 信道约束 时延 参数不确定 线形矩阵不等式 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]